# All Questions

1k views

I'm trying to write an addon to customize the trackpad panning, zoomimg, and rotating gestures, but can't find a way to read the actual trackpad parameters for position and so on. The properties in ...
435 views

### Property Panel Custom Popup Menu when user presses hotkey over an input field

is it possible to trigger this kind of menu: in the property panel when I press a hotkey over a button/input field? I want to specifically,when the user presses a specific hotkey when over an input ...
319 views

### Different seeds on different render layers

Under the Render Properties tab there is a setting to change the seed used for ray tracing. Is there a way to use different seeds on different render layers? I know this is possible using multiple ...
282 views

### Anton Balazh Ocean Material

Anton Balazh has an amazing relief map with the best ocean material I have ever seen. This link has several examples: http://unofficialnetworks.com/2014/06/detailed-relief-maps-show-worlds-mountain-...
198 views

### How to make a dynamically expanding menu in Blender?

Say we want to navigate a tree structure without knowing all the data ahead of time, is it possible to do this in Blender? For example, a menu which dynamically loaded a directory hierarchy from the ...
163 views

### Blender on Windows is skipping python script. (brenda on windows)

We've been using Brenda for quite some time now for rendering architectural stills. Since our editing stations are doing nothing at night, I started making a desktop app that allows you to pick jobs ...
621 views

### 2D morphing video images

I'm trying to morph from one video to another. I've seen some tutorial of how to morph images subdividing the plane and moving vertices, but what I really want is to morph from 2D moving images (video)...
77 views

### Lens distortion algorithm in Movie Clip Editor

Which lens undistortion algorithm is used in Blender? I want to know more about these K1, K2, K3 parameters. How do they work? How they relate to each other. Why I need K2 and K3 if K1 does the job? ...
826 views

### Using a video from the Video Sequence Editor in the Movie clip editor?

So what I want to do is track a video that I have edited in NLE, but when I click on the movie icon whilst in the Motion Tracking layout, the list is blank.
86 views

### Problem with sculpting, using graphics monitor

So I have this graphics drawing monitor Huion Kamvas, that I'm trying to use with the blender sculpting, and I am getting this weird issue. Whenever I try to put the first stroke on my object, ...
1k views

### How to create macro/record actions while modeling

I'd like to record my actions and create a macro. I've tried allready two things: 1) copying actions from Info panel and pasting them to text aditor. Then adding the lines: ...
58 views

### Crowd Scene: Generating many characters with random clothing objects

I'm working on a small crowd scene and trying to figure out the best way to set it up from a workflow perspective. I have addons or particle systems to place the characters, but I need to generate a ...
300 views

### ANT Landscape erode option?

I have just updated to Blender 2.79 and was playing around with the updated ANT landscape add-on when I noticed a new option called Landscape Eroder, this has the potential to be really cool but I can'...
261 views

### PyOpenGL and VBO Indexes

Long story short, I'm trying to do a modal handler that draws using OpenGL into the viewport. Immediate mode through BGL works fine, but is dog slow. I tried using VBOs through BGL but there seems to ...
266 views

### Viewport widgets with draw handler

Is it possible to create viewport widgets with draw handler? I have an operator which produces simple mesh geometry, I use operator redo properties panel to edit the result as shown in animation ...
177 views

### “Search for unknown operator” On Start-Up After Removing Module and Shortcuts

For lack of a less drastic alternative, I created a whole module just for setting bpy.context.window.screen to a specific screen, since ...
247 views

### Can I render ambisonic b-Format audio?

Im looking for a way to render spatialized sound to 1st order ambisonic b-format. I assumed the 4ch option in scene audio settings was the key. But that just seems to render a quad speaker setup? The ...
141 views

### How to call original operator from operator's override?

I would like to amend functionality of an existing operator with a condition check and then "proceed" with the original operator (if condition check allows it). It is essentially what is done in ...
318 views

### Stencil Image low resolution

I am trying to texture paint a mesh using a pretty high resolution stencil image.. But when i try to zoom into the image to paint the details...it appears very low res... Is there any way to make it ...
1k views

### How to get actual rendering progress and estimation from render_stats python handler?

There is render_stats bpy handler It seem like it is invoked every time rendering engine prints to console smth like ...
481 views

### Constrained depth of sculpting

In Sculpt mode, I need to fix Adding/Substracting of the object to a minimum/maximum depth, that I've predetermined. I need the whole mesh to be smooth, as if I used normal brush but with a Layer, ...
769 views

### How does blender calculate poseBone.matrix?

How does blender calculate a poseBone.matrix through the hierarchy chain? A bone's final matrix is a transformation matrix which defines the bone in armature-space in the current pose (M1). I want to ...
356 views

### Kissing Spheres of Various Sizes (a plane of bubbles)

How can I create something like the bubbles in this picture? They are kissing (not fusing like soap bubbles do) so there should be no overlap. Is there a way to achieve this with particles? I ...
399 views

### Step-by-step execution of BGE mainloop for debugging?

I'm wondering whether it is possible to run the game engine in a "cycle - by - cycle" fashion. I.e. a sort of debugging mode where one could associate the mainloop cycles to keyboard events (for ...
47 views

### Blender Viewport Issues

I am new to 3D modelling so I know my hardware is not up to snuff, but I am running a 13 inch Macbook Air with a 1.6 GHz Intel Core i5, and an integrated graphics card with 121.12 GB of space and 8 GB ...
40 views

### Filmic color management and masks

I recently had the problem of having to mask (rotoscope) some footage in the movie clip editor and render out some elements to put in there. For rendering those 3D elements, I wanted to use the filmic ...
53 views

### Why does Select-All in Face-Select mode also select isolated edges?

Blender v2.79. Let's say I have to extrude all faces of this planar construction containing two edges not included in faces, and one isolated vertex: In this object, there are not hidden ...
93 views

### How to create realistic steam in blender?

Situation I created a fluid simulation of boiling water in a pot. Now I am trying to create photo realistic steam in blender. I want to show the steam rising up from the pot. Here you can see what I ...
33 views

### Component Selection Distance

When selecting components, is there a way to control the "selection distance/area"? I don't want to select a component, even if I click ~20 pixels away from it. Thanks in advance!
39 views

### split up and render depth slices (for extreme dof)

I'm doing a particle simulation of fire embers swirling around, to be matched up to a filmed plate. The plate has a very shallow depth of field, which creates a problem when comping it in. It takes ...
28 views

### Can i hide the mini axis per 3D View (instead of globally via preferences)

I know I can i hide the mini axis globally for all 3D views in the preferences, but i would like to just hide it for 2 of 3 3D views in my screen layout. Is it possible?
173 views

### Unable to export per vertex data to wavefront

I am trying to reconstruct a cube with normals that look like in the very first animation in the "Introducing normals" part of this article. If I start out with the default cube, smooth the faces and ...
208 views

### Particle Instance Modifier : colour each instance based on the emitter texture (like Hair strands materials do)

In cycles, with particle hair strands, I can get the colour from the texture of the emitter object for colouring the entire strand. When I use the "Particle Instance" modifier on a mesh (a simple ...
306 views

### How can I disable click to move (grab)?

When I select an object by clicking right or left mouse button, the objects moving with my cursor. I'm new to Blender, not sure if this is a normal default. I tried to disable translate under 3D View, ...
65 views

### Render only Nodes that Change

When compositing with Blender, oftentimes I'll end up with a large node graph, with most of the nodes not changing at all. However, whenever I add another node, even if it's not connected to the rest ...
195 views

### Rig a strand with multiple control points?

I am trying to figure out the most optimal way to rig things like hair strands, cables, tentacles, etc. I am looking to make a strand that is moved with a controller at the tip, but then has multiple ...
347 views

### Nvidia GPU not showing as Compute Device for Cycles

I have a question concerning my GPU Cycles Compute Device. I am running MacBook Pro 10.12.5 with a NVIDIA GeForce GT 650 M. I have done my research a bit and stumbled upon a confusing area. I ...
72 views

### Correctly combining a two layer material in cycles

I am trying to create a material that has two physical layers. A thin top layer covering the second main body layer of the object, I have drawn a quick sketch of what I mean: Light interacting with ...
288 views

### ACES workflow in Blender

Q.: What is the correct way to import ACES 2065-1 encoded EXR files into Blender whilst keeping the look identical to what I saw when exporting from Davinci Resolve? In both application I select the ...
128 views

I've created a displacement map which is based on the height of the mesh. The problem is that by the nature of this organic texture there is some self-intersecting geometry. I don't believe this can ...
112 views

### Kelvin temperature from heat attribute

When simulating fire, the heat attribute gives a scalar representing the heat, but the blackbody node, which converts a temperature to a color requires the heat to be specified in Kelvins, and the ...
55 views

### how to retrieve movie clip details with a script?

I primarily use blender as a video sequence editor for existing movie clips. Generally I want to remove a few frames and then render the movie with the same output format as the movie clip that I am ...
546 views

### Render on Tesla K80

I'm trying to render on a Tesla K80, but it doesn't work. blender --debug-cycles outputs ...
920 views

### How to convert image pixel values from 8bit to 32bit properly? - answered.. but why byte image buffer is stored with non-linear color values?

I'm testing code from this question:  import bpy ...
70 views

### Normal Map only visible on single Shape Key?

Is there a way to make a normal map for facial wrinkles more/less visible with certain shape keys? I've seen something like this on youtube, but I haven't been able to determine how it was done. I've ...
479 views

### Adding motion blur to a video sequence

I am wondering whether it would be possible to use Blender to add a simulated rolling shutter motion blur to a video sequence. I have a video sequence, taken at 240 FPS with a global shutter camera. ...
179 views

### motion trail effect on video in VSE

1) Can Blender VSE do something like in this video ? I have been looking on the net for motion trail effect, ghost effect, but cannot seem to find a way to do this. 2) Would I have to use a script ...
76 views

### What do all of the mode enums mean?

What do all the various mode constants in blender operators documentation do? bpy.ops.object.duplicate(linked=False, mode='TRANSLATION') - Duplicate selected objects Parameters: ...